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Diffstat (limited to 'nuttx/configs/arduino-due/include/board.h')
| -rw-r--r-- | nuttx/configs/arduino-due/include/board.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/nuttx/configs/arduino-due/include/board.h b/nuttx/configs/arduino-due/include/board.h new file mode 100644 index 000000000..ef841926c --- /dev/null +++ b/nuttx/configs/arduino-due/include/board.h @@ -0,0 +1,243 @@ +/************************************************************************************ + * configs/arduino-due/include/board.h + * + * Copyright (C) 2013 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +#ifndef __CONFIGS_ARDUINO_DUE_INCLUDE_BOARD_H +#define __CONFIGS_ARDUINO_DUE_INCLUDE_BOARD_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#ifndef __ASSEMBLY__ +# include <stdint.h> +# ifdef CONFIG_GPIO_IRQ +# include <arch/irq.h> +# endif +#endif + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/* Clocking *************************************************************************/ +/* After power-on reset, the SAM3X device is running on a 4MHz internal RC. These + * definitions will configure clocking + * + * MAINOSC: Frequency = 12MHz (crysta) + * PLLA: PLL Divider = 1, Multiplier = 14 to generate PLLACK = 168MHz + * Master Clock (MCK): Source = PLLACK, Prescalar = 1 to generate MCK = 84MHz + * CPU clock: 84MHz + */ + +/* Main oscillator register settings. + * + * The start up time should be should be: + * Start Up Time = 8 * MOSCXTST / SLCK = 56 Slow Clock Cycles. + */ + +#define BOARD_CKGR_MOR_MOSCXTST (62 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */ + +/* PLLA configuration. + * + * Divider = 1 + * Multipler = 14 + */ + +#define BOARD_CKGR_PLLAR_MUL (13 << PMC_CKGR_PLLAR_MUL_SHIFT) +#define BOARD_CKGR_PLLAR_STMODE PMC_CKGR_PLLAR_STMODE_FAST +#define BOARD_CKGR_PLLAR_COUNT (63 << PMC_CKGR_PLLAR_COUNT_SHIFT) +#define BOARD_CKGR_PLLAR_DIV PMC_CKGR_PLLAR_DIV_BYPASS + +/* PMC master clock register settings. + * + * Source = PLLA + * Divider = 2 + */ + +#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA +#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2 + +/* USB UTMI PLL start-up time */ + +#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT) + +/* Resulting frequencies */ + +#define BOARD_MAINOSC_FREQUENCY (12000000) /* MAINOSC: 12MHz crystal on-board */ +#define BOARD_PLLA_FREQUENCY (168000000) /* PLLACK: 14 * 12Mhz / 1 */ +#define BOARD_MCK_FREQUENCY (84000000) /* MCK: PLLACK / 2 */ +#define BOARD_CPU_FREQUENCY (84000000) /* CPU: MCK */ + +/* HSMCI clocking + * + * Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK) + * divided by (2*(CLKDIV+1)). + * + * MCI_SPEED = MCCK / (2*(CLKDIV+1)) + * CLKDIV = MCCK / MCI_SPEED / 2 - 1 + * + * Where CLKDIV has a range of 0-255. + */ + +/* MCK = 84MHz, CLKDIV = 104, MCI_SPEED = 84MHz / 2 * (104+1) = 400 KHz */ + +#define HSMCI_INIT_CLKDIV (104 << HSMCI_MR_CLKDIV_SHIFT) + +/* MCK = 84MHz, CLKDIV = 2, MCI_SPEED = 84MHz / 2 * (2+1) = 14 MHz */ + +#define HSMCI_MMCXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT) + +/* MCK = 84MHz, CLKDIV = 1, MCI_SPEED = 84MHz / 2 * (1+1) = 21 MHz */ + +#define HSMCI_SDXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT) +#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV + +/* FLASH wait states + * + * FWS Max frequency + * 1.62V 1.8V + * --- ----- ------ + * 0 24MHz 27MHz + * 1 40MHz 47MHz + * 2 72MHz 84MHz + * 3 84MHz 96MHz + */ + +#define BOARD_FWS 2 + +/* LED definitions ******************************************************************/ +/* There are two user-controllable LEDs on board the Arduino Due board: + * + * LED GPIO + * ---------------- ----- + * TX Yellow LED PA21 + * RX Yellow LED PC30 + * + * Both are pulled high and can be illuminated by driving the corresponding + * GPIO output to low. + */ + +/* LED index values for use with sam_setled() */ + +#define BOARD_LED_RX 0 +#define BOARD_LED_TX 1 +#define BOARD_NLEDS 2 + +/* LED bits for use with sam_setleds() */ + +#define BOARD_LED_RX_BIT (1 << BOARD_LED_RX) +#define BOARD_LED_TX_BIT (1 << BOARD_LED_TX) + +/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is + * defined. In that case, the usage by the board port is defined in + * include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related + * events as follows: + * + * SYMBOL Val Meaning LED state + * RX TX + * ------------------- --- ----------------------- -------- --------- */ +#define LED_STARTED 0 /* NuttX has been started OFF OFF */ +#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */ +#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */ +#define LED_STACKCREATED 1 /* Idle stack created ON OFF */ +#define LED_INIRQ 2 /* In an interrupt No change */ +#define LED_SIGNAL 2 /* In a signal handler No change */ +#define LED_ASSERTION 2 /* An assertion failed No change */ +#define LED_PANIC 3 /* The system has crashed OFF Blinking */ +#undef LED_IDLE /* MCU is is sleep mode Not used */ + +/* Thus if RX is statically on, NuttX has successfully booted and is, + * apparently, running normmally. If TX is flashing at approximately + * 2Hz, then a fatal error has been detected and the system has halted. + */ + +/* Button definitions ***************************************************************/ +/* There are no buttons on the Arduino Due board. */ + + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +#ifndef __ASSEMBLY__ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/************************************************************************************ + * Public Function Prototypes + ************************************************************************************/ +/************************************************************************************ + * Name: sam_boardinitialize + * + * Description: + * All SAM3X architectures must provide the following entry point. This entry point + * is called early in the intitialization -- after all memory has been configured + * and mapped but before any devices have been initialized. + * + ************************************************************************************/ + +void sam_boardinitialize(void); + +/************************************************************************************ + * Name: sam_ledinit, sam_setled, and sam_setleds + * + * Description: + * If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LEDs. If + * CONFIG_ARCH_LEDS is not defined, then the following interfacesare available to + * control the LEDs from user applications. + * + ************************************************************************************/ + +#ifndef CONFIG_ARCH_LEDS +void sam_ledinit(void); +void sam_setled(int led, bool ledon); +void sam_setleds(uint8_t ledset); +#endif + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __CONFIGS_ARDUINO_DUE_INCLUDE_BOARD_H */ |